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Edited November 30, 2022
at 10:00 AM
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I searched Cyperpower, so hope it's not a repost.
It's $165 on Amazon.
https://computers.woot.com/offers...clcd-ups-2
A mini-tower UPS with line interactive topology, the CyberPower PFC Sinewave CP1000PFCLCD provides battery backup (using sine wave output) and surge protection for desktop computers, workstations, networking devices, and home entertainment systems requiring active PFC power source compatibility.
The CP1000PFCLCD features an advanced multifunction control panel with a color LCD to quickly confirm status and alerts at-a-glance. The screen tilts for easy viewing when the UPS is placed in a low position such as under a desk. Two USB charge ports (one Type-A and one Type-C) power portable devices such as mobile phones and tablets, even during a utility power failure.
The CP1000PFCLCD uses Automatic Voltage Regulation (AVR) to correct minor power fluctuations without switching to battery power, which extends battery life. AVR is essential in areas where power fluctuations occur frequently. The CP1000PFCLCD comes with a three-year warranty (including coverage of batteries) and a $350,000 Connected Equipment Guarantee.
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going price on other sites is $165, so saving about $35
note that this takes one 12v battery. the battery is about $20. so $20 of that $130 is the cost of the battery -- edit credit to PureDreams
batteries last up to 3-5 years, depending upon your power dips/outages.
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1500va for $150
https://www.costco.com/cyberpower-1500va--900watts-true-sine-wave-uninterruptible-power-supply-(ups)... [CyberPower 1500VA]
I ordered one from Costco a week ago, box severely damaged - retaped, looked like someone else's return. Sent back and ordered a second, same condition. Ordered a third and decided to cancel, not risking it. I still have not gotten refund from Costco on the first shipment. Costco loosing money shipping 25lb junk back and forth, and sales, and customer satisfaction. If this happened with Amazon at least I'd get some promo credit for the hassle.
Confirmed - The Costco 1500VA is the older model with two USB A ports and a monochrome LCD. Blowing out stock. However, I have two of these and they have been solid. I used to be an APC die-hard, but their consumer grade products went downhill (i.e. Schneider Electric). Industrial APC products are still solid.
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Don't worry, open it, see it will be fine. I had 7 packages including 3 I asked ship to warehouse based on SD'er feedback and comments. I had all packages including warehouse pickup one damaged. I was told by Costco associate it isn't Costco nor the carrier issue, manufacturer sent them like that. I finally opened one package and found the product is absolutely fine. BTW none of them bought on Costco are returns from used product, I can confirm from 3 packages I finally kept.
My final comment, don't listen to SD'ers who hasn't opened the product and verified it is really damaged.
Does a stereo amp benefit from the sign wave thingy, or is that more for computers?
Sweet! In for 2..
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Does a stereo amp benefit from the sign wave thingy, or is that more for computers?
Only thing that really benefits from it is desktop/servers/workstations. Anything that cant survive a potential few seconds without power. In your example of an amp unless its truly vital it needs power or turned off properly then you don't require a sinewave ups.
My final comment, don't listen to SD'ers who hasn't opened the product and verified it is really damaged.
I bought 3 in the last 3+ years with the oldest one running for 3+ years without any issue. The outer box is just a thicker paper based, there is much larger and better foam padding inside that actually protects from damages. Outer cover is not for protection.
Serious design flaw. If you search SD for past APC Sine Wave deals you will see lots of discussion.
You can also check old reviews on Amazon for the BR1500MS. It was never clear if the BR1500MS2 replacement model corrected the problem.
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Does a stereo amp benefit from the sign wave thingy, or is that more for computers?
To illustrate this, image AC power, which is a sine wave, and put it on an XY axis. You have a -◠◡- with the mid line being 0V and the voltage in the lowest part of the wave being negative. If you look at it you will notice that it has the exact same characteristics as a sound wave. In fact if you put AC line voltage through a speaker (and it didn't blow up) you would hear a 60hz tone.
Now, when the linear power supply alters this wave, it shrinks it and then changes it to DC by cutting the top half or the bottom half off and on alternating cycles by putting it through two pairs of opposite facing diodes (rectifying). Then it goes through two large capacitors which smooths out the blips and makes it all a nice stable output. Think of the capacitors like a rain barrel with a shower head on it. If you want to take a shower you let the barrel fill with water and then turn it on, and even if it rains intermittently you will get a steady flow as long as the barrel doesn't run empty before your shower ends.
What does this have to do with a UPS?
Well, this power is being used to directly drive the transistors which are amplifying the sound. The quality of the input AC power is going to be directly responsible for making sound waves louder because that power BECOMES the louder sounds by action of the transistors.
Putting a shitty 'virtual sine wave' AC voltage created from a chip or a bunch of MOSFETs chopping 12V battery power into pieces and reconstructing them in the vague form of a sine wave in your receiver is going to work, but when you do it you will make a recording engineer somewhere in the world cry without knowing the reason.
But you will be the reason.
Don't do it.